Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=369b8f5a70402d9fe77006cd0044c8a3fcd08430
Commit: 369b8f5a70402d9fe77006cd0044c8a3fcd08430
Parent: 4670df831cb479ba57dd0fa0b8a9eb88cc7129be
Author: Nick Piggin <[EMAIL PROTECTED]>
AuthorDate: Tue Dec 4 23:45:25 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Dec 5 09:21:20 2007 -0800
mm: fix XIP file writes
Writing to XIP files at a non-page-aligned offset results in data corruption
because the writes were always sent to the start of the page.
Signed-off-by: Nick Piggin <[EMAIL PROTECTED]>
Cc: Christian Borntraeger <[EMAIL PROTECTED]>
Acked-by: Carsten Otte <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
mm/filemap_xip.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 32132f3..e233fff 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -314,7 +314,7 @@ __xip_file_write(struct file *filp, const char __user *buf,
fault_in_pages_readable(buf, bytes);
kaddr = kmap_atomic(page, KM_USER0);
copied = bytes -
- __copy_from_user_inatomic_nocache(kaddr, buf, bytes);
+ __copy_from_user_inatomic_nocache(kaddr + offset, buf,
bytes);
kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(page);
-
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